from tkinter import *
root = Tk()
c=Canvas(root,bg='white',width=300,height=100);c.pack()
c.create_polygon(40,10,70,70,10,70,fill='white',outline='black')
c.create_polygon(80,10,140,10,140,70,fill='white',outline='black')
c.create_polygon(210,10,150,10,150,70,210,70)
c.create_polygon(220,10,280,10,220,70,280,70,fill='white',outline='black')
